Perhaps you should try some spelling variations:
yan zhang » yuan chang, bin zhang, han chang
shang hai » shang kai, dang hai, chang ha
wei chen » frei chen, jui chen, yi chen
wei shen » kwei sheng, enwei shen, wei shang
yang jie » yang jin, yang di, yang jui
tan yan » tan yang, nan yan, tan tan
yang yi » yang di, yang xi, yang jui

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tan yan zhang ((wei chen) OR (wei shen)) ((yang jie) or (yang yi)) shang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tan yan zhang ((wei chen) OR (wei shen)) ((yang jie) OR (yang yi)) shang hai ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tan yan zhang ((wei chen) OR (wei shen)) ((yang jie) or (yang yi)) shang hai ;".
• Adding a wildcard symbol may retrieve word variants: tan yan zhang ((wei chen) OR (wei shen)) ((yang jie) or (yang yi)) shang hai ;*.